Počet záznamů: 1  

Can supernova shells feed supermassive black holes in galactic nuclei?

  1. 1.
    SYSNO ASEP0537350
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevCan supernova shells feed supermassive black holes in galactic nuclei?
    Tvůrce(i) Palouš, Jan (ASU-R) RID, ORCID
    Ehlerová, Soňa (ASU-R) RID, ORCID
    Wünsch, Richard (ASU-R) RID, ORCID
    Morris, M. (US)
    Číslo článkuA72
    Zdroj.dok.Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
    Roč. 644, December (2020)
    Poč.str.10 s.
    Forma vydáníOnline - E
    Jazyk dok.eng - angličtina
    Země vyd.FR - Francie
    Klíč. slovahydrodynamics ; shock waves ; supernovae
    Vědní obor RIVBN - Astronomie a nebeská mechanika, astrofyzika
    Obor OECDAstronomy (including astrophysics,space science)
    CEPGA19-15480S GA ČR - Grantová agentura ČR
    Způsob publikováníOmezený přístup
    Institucionální podporaASU-R - RVO:67985815
    UT WOS000596605400014
    EID SCOPUS85097352656
    DOI10.1051/0004-6361/202038768
    AnotaceWe simulate shells created by supernovae expanding into the interstellar medium of the nuclear region of a galaxy, and analyze how the shell evolution is influenced by the supernova position relative to the galactic center, by the interstellar matter density, and by the combined gravitational pull of the nuclear star cluster and supermassive black hole (SMBH). We adopted simplified hydrodynamical simulations using the infinitesimally thin layer approximation in 3D (code RING) and determined whether and where the shell expansion may bring new gas into the inner parsec around the SMBH.Results. The simulations show that supernovae occurring within a conical region around the rotational axis of the galaxy can feed the central accretion disk surrounding the SMBH. For ambient densities between 10(3) and 10(5) cm(-3), the average mass deposited into the central parsec by individual supernovae varies between 10 and 1000 solar masses depending on the ambient density and the spatial distribution of supernova events. Supernovae occurring in the aftermath of a starburst event near a galactic center can supply two to three orders of magnitude more mass into the central parsec, depending on the magnitude of the starburst. The deposited mass typically encounters and joins an accretion disk. The fate of that mass is then divided between the growth of the SMBH and an energetically driven outflow from the disk.
    PracovištěAstronomický ústav
    KontaktRadka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
    Rok sběru2021
    Elektronická adresahttps://doi.org/10.1051/0004-6361/202038768
Počet záznamů: 1  

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